Engine - Yamaha N MAX GPD150-A 2015 Service Manual

ENGINE INSPECTION .................................................................................... 5-1
MEASURING THE COMPRESSION PRESSURE .................................... 5-1
ENGINE REMOVAL ........................................................................................ 5-3
INSTALLING THE ENGINE....................................................................... 5-7
CONNECTING THE LEADS ..................................................................... 5-8
INSTALLING THE MUFFLER ................................................................... 5-8
CYLINDER HEAD............................................................................................ 5-9
REMOVING THE CYLINDER HEAD.......................................................5-13
CHECKING THE CYLINDER HEAD .......................................................5-13
CHECKING THE CAMSHAFT SPROCKET ............................................5-14
CHECKING THE TIMING CHAIN TENSIONER......................................5-14
CHECKING THE DECOMPRESSION SYSTEM.....................................5-15
CHECKING THE VVA SOLENOID..........................................................5-15
INSTALLING THE CYLINDER HEAD .....................................................5-15
CAMSHAFT ...................................................................................................5-18
REMOVING THE CAMSHAFT ................................................................5-19
CHECKING THE CAMSHAFT................................................................. 5-19
CHECKING THE ROCKER ARMS AND ROCKER ARM SHAFTS ........5-20
INSTALLING THE CAMSHAFT AND ROCKER ARMS ..........................5-20
VALVES AND VALVE SPRINGS..................................................................5-22
REMOVING THE VALVES ......................................................................5-23
CHECKING THE VALVES AND VALVE GUIDES .................................. 5-23
CHECKING THE VALVE SEATS ............................................................5-25
CHECKING THE VALVE SPRINGS........................................................ 5-26
INSTALLING THE VALVES ....................................................................5-27
CYLINDER AND PISTON..............................................................................5-29
REMOVING THE PISTON ......................................................................5-30
CHECKING THE CYLINDER AND PISTON ........................................... 5-30
CHECKING THE PISTON RINGS...........................................................5-31
CHECKING THE PISTON PIN ................................................................5-32
CHECKING THE TIMING CHAIN GUIDE (EXHAUST SIDE) .................5-32
INSTALLING THE PISTON AND CYLINDER .........................................5-32

ENGINE

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